Nail brush



FIG. 1 is a perspective view from the top and left of the nail brushhaving our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a plan view thereof; and,

FIG. 7 is a bottom view thereof.

The ornamental design for “nail brush,” as shown and described.